158014378523 has 4 divisors (see below), whose sum is σ = 162285037440. Its totient is φ = 153743719608.

The previous prime is 158014378513. The next prime is 158014378549. The reversal of 158014378523 is 325873410851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325873410851 = 355717 ⋅916103.

It is a cyclic number.

It is not a de Polignac number, because 158014378523 - 2³² = 153719411227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158014378513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135329403 + ... + 2135329476.

It is an arithmetic number, because the mean of its divisors is an integer number (40571259360).

Almost surely, 2^158014378523 is an apocalyptic number.

158014378523 is a deficient number, since it is larger than the sum of its proper divisors (4270658917).

158014378523 is an equidigital number, since it uses as much as digits as its factorization.

158014378523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270658916.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 158014378523 in words is "one hundred fifty-eight billion, fourteen million, three hundred seventy-eight thousand, five hundred twenty-three".